Thermometer



FIG. 1 is a front perspective view of a thermometer, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is its enlarged top plan view;

FIG. 7 is its enlarged bottom plan view; and,

FIG. 8 is a perspective view shown in a configuration of use.

The broken lines in the drawings illustrate the portions of the thermometer, which form no part of the claimed design. 

CLAIM The ornamental design for a thermometer, as shown and described. 